Update the UI to show signed out when we notice that the user has been signed out.
Update the UI to show signed out when we notice that the user has been
signed out.

tgdavies/codeworld,d191562687/codeworld,Ye-Yong-Chi/codeworld,venkat24/codeworld,pranjaltale16/codeworld,Ye-Yong-Chi/codeworld,google/codeworld,alphalambda/codeworld,xwysp/codeworld,pranjaltale16/codeworld,venkat24/codeworld,nomeata/codeworld,nomeata/codeworld,tgdavies/codeworld,alphalambda/codeworld,three/codeworld,d191562687/codeworld,Ye-Yong-Chi/codeworld,stefan-j/codeworld,alphalambda/codeworld,pranjaltale16/codeworld,xwysp/codeworld,tgdavies/codeworld,nomeata/codeworld,stefan-j/codeworld,three/codeworld,parvmor/codeworld,xwysp/codeworld,venkat24/codeworld,three/codeworld,parvmor/codeworld,parvmor/codeworld,d191562687/codeworld,google/codeworld,stefan-j/codeworld,google/codeworld